13685351 has 4 divisors (see below), whose sum is σ = 13696992. Its totient is φ = 13673712.

The previous prime is 13685327. The next prime is 13685359. The reversal of 13685351 is 15358631.

13685351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15358631 = 19 ⋅808349.

It is a cyclic number.

It is not a de Polignac number, because 13685351 - 2²² = 9491047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13685359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3830 + ... + 6483.

It is an arithmetic number, because the mean of its divisors is an integer number (3424248).

Almost surely, 2^13685351 is an apocalyptic number.

13685351 is a deficient number, since it is larger than the sum of its proper divisors (11641).

13685351 is a wasteful number, since it uses less digits than its factorization.

13685351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11640.

The product of its digits is 10800, while the sum is 32.

The square root of 13685351 is about 3699.3717034113. The cubic root of 13685351 is about 239.1949355851.

The spelling of 13685351 in words is "thirteen million, six hundred eighty-five thousand, three hundred fifty-one".